import errorCodes from '../../lib/error';
import { Format, format } from './Format';

const {
  ERR_INVALID_FORMAT_INSTANCE,
} = errorCodes;

const isValidFormat = (format: Format) => {
  if (!(format instanceof Format)) {
    throw new ERR_INVALID_FORMAT_INSTANCE();
  }

  return true;
};

const cascade = (formats: Format[]) => {
  if (!formats.every(isValidFormat)) {
    return;
  }

  return (info) => {
    let obj = info;

    for (const item of formats) {
      obj = item.transform(obj);

      if (!obj) {
        return false;
      }
    }

    return obj;
  };
};

export function combine(...args: Format[]) {
  const combinedFormat = format(cascade(args));

  return combinedFormat();
}